Improvement in spike-making machines



D. EYNUN.

Spike-Making Machines.

No.137,427. PatentedApril1,1873.

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UNITED STATES DAVID EYNON, or srr, LOUIS, MISSOURI.

IMPROVEMENT IN SPIKE-MAKING MACHINES.

Specification forming part of Letters Patent No. 137,427, dated April1,1873; application filed November 8, 1872.

, Patent were granted to me on the 3d day of January, 1871, that theangle at which the header operates may be varied during the operation ofthe machine, and so that the 1 headingdie, when at the limit of itsforward movement, may always be at the same height, no matter what itsinclination may be. tain these objects by causing the headingbar H toslide on guides q attached to quadrants M M hung to the frame of themachine, and admitting of being raised or lowered, so that the headercan operate at any desired inclination without stopping the machine,(see vertical section, Figure l, of the accompanying drawing,) and by soarranging the several parts that when the header reaches the limit ofits forward movement, as shown in Fig. 1,' the center of the pins bywhich the quadrants are hung to the frame shall coincide with the centerof the pins by which the sliding boxes K are connected to theheadingbar.

My present invention is applied to a machine precisely like thatdescribed in my aforesaid patent; hence it has not been deemed necessaryto illustrate more of the machine than the heading-bar H, to which theusual reciprocating motion is imparted, part of the die G, on which thespike-bar is laid, and against which it is headed, part of thegriping-arm B, which holds the spike-bar against the die during theheading process, and parts of the opposite side frames A and A.

In my former patent the heading-bar was arranged to slide in guides sosecured to the sides of the frames that they could be adjusted to anydesired inclination, not, however, without stopping the machine-a defectwhich I obviate by my present invention. Another defect in my formerinvention, and which I now overcome, was the changing of Iat- ' theheight of the heading die whenever a 'change in the inclination of theheading-bar was made.

Each quadrant M has a pin, m, passing through and turning in theadjoining frame, and confined thereto by a key or otherwise. The slidesK, which are arranged to swivel on the ends of arms J J projecting fromthe heading-bar H, are adapted to V-shaped guides on the quadrants M,and these may be caused to assume different angles by turning thequadrants on their pins m. In the present instance a pinion, L, on ashaft, N, which may be provided with suitable handles, is arranged toraise and lower the quadrants; but any other appropriate device may beused for the purpose, and any suitable mechanism may be employed forretaining the quadrant after adjustment.

Different characters of spike-heads demand different inclinations of theheading-bar; but there should be no variation in the height of theheading-die in respect to the die on which the spike-bar rests. By soregulating the -movement of the heading-bar in respect to the axes ofthe quadrants that when the bar is at the limit of its forward movementthe said axes shall always coincide with those of the swiveling slidesK, the end of the heading-die will always be at the same altitude whenat the end of its stroke, no matter what may be the inclination of theheadin g-bar.

I claim as my invention- 1. The combination of the heading-bar H andslides K with the adjustable quadrants M and their guides q.

2. The said slides and quadrants so regu lated in respect to themovement of the head: ing-bar that their axes shall coincide when thesaid bar has reached the limit of its forward movement.

Intestimony whereof I have signed my name to this specification in thepresence of two 4 subscribing witnesses.

DAVID EYNON.

Witnesses:

WM. A. STEEL, HI'BERT HoWsoN.

